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\begin{equation*} \mathbf{H} \left| \psi (t)\right\rangle= i \hbar {d\over dt} \left| \psi (t) \right\rangle=  \frac{\hat{\mathbf{p}}^2}{2m}\left| \psi (t)\right\rangle+V(\hat{\mathbf{r}},t)\left| \psi (t) \right\rangle\end{equation*}
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